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So if a polarized filter actually polarized, it would only allow a fraction of a percent of light through. Because most random light will not be aligned. So right of the bat they are being deceptive, because at least half of the light is making it through. It's actually called a "somewhat polarized light filter" and because it's somewhat polarized, the magic trick is forcing people to accept that it's perfectly polarized when it isn't even close. Quantum physics is just a money making deception. Proven by the fact that this experiment is completely explained by classical electromagnetic wave theory.

7:10 erratum? Polarizer is "horizontal" and the red wave is "vertical"!!!

8 years later we are still not there

I need help figuring out the proper way to reinstall the film in my home projector

This is the best explanation by far the best one

Wavicle?

I just found out I can use this magic plastic to solve the problem of two TVs both receiving signals from both remotes so I can't operate them independently. I feel like Iron Man when he figured out time travel.

Circular polarizes twist the polarization angle depending on its wavelength. If you start out with linear polarized white light and pass it through a circular polarizer, each color (wavelength) will exit at a different polarization angle. Now use a another linear polarizer after that to dial in the color you want to pass. I think this is done on stage lights instead of color filters and permits smooth transitions from one color to another.

i did not pay my university to send me this link...

It takes both a great deal of humility and courage to change beliefs. And I think it takes a lot of character to go through that and still come out on the other side with a respectful attitude toward people who remain standing on the edge of that precipice, hesitant to leap for fear of the consequences. If there is a God, I am certain he is most pleased with people like you who recognize scientific evidence as manifestations of his attributes, and who exercise the integrity to align with it.

One of the best science episodes on youtube, ever!!! thanks Eric. You made my day. Love&light!

if we stacked enough translucent polarization layers to form a cube, could we theoretically not precisely create the location in 3D space, for a photon to light up, e.g. a volumetric display? if you stopped or polarized the light in the middle of the cube, and then used the light blocking property of the now electrically visible screen there, to light up there locally in the middle of the cube, and had enough images to fool the eye of course.

Wow I feel dumb

Who eats hard shell tacos?

Crunchy tacos??? Lol

Universe defendable not space and time.Try to find online definition of Space and definition of Time.

overall, pretty good.

uh...You said, first the light is linearly polarized then circularly polarized as it goes through the first filter then through the stretched plastic. This is nonsensical. It should be really obvious why.

6 years later and if feels like the singularity is right around the corner 😬

Well done.

Hi there. There is an interesting yet little known about model of light that explains the nature of impossible colours. en.wikipedia.org/wiki/Impossible_color The two light waves are thus organised through the nature of the musical octave (1/2) and musical 5th (3/2). I think what you have stumbled upon is explained by this nature. Great video by the way.

Can somebody explain that 3 filter thing as stupid as possible i need it for my grade

I wanna know how u actually make the lense polarized like How could u make it yourself

"Im not a physicist" but I can tell your a mathematician and a good teacher

Op sir 😃

I would like to see the colourful filter rotated to cover the entire camera lens view while filming something. I would like to see the effect of moving through the rainbow filter for the entire screen. You may have a very cool video effect there when expanded to full screen.

Does a circular polarized guitar string sound different than linear? Maybe this is a way to make a unique sound. Or maybe this is what violinists are doing with their strings as they change the angle of their strokes? Or maybe it doesn't sound different at all? Do musicians know?

Very excellent syle

I think the filters breakdown the field, try to use polarized filters that reflects 50% polarized light, like polarized mirror. I believe those filters breakdown and mergers the field The light must be there, the filters just changes to a spectrum we are not able to see it, using mirroring polarized erases the light we are not able to see it. The mirror and polarization must be in the same layer.

got 31 score 😅 correct - 22/25

Okay but did Alexander Graham Bell actually invent the "Sierpinski" tetrahedron?

Waves get excited and we get "patry"cles.

Am sick of this guy trying to make the thing he is explaining more complicated to indicate how funny science can be , stfu next time and explain the thing and the thing only if hou want us to like your vudeo .

Second follow up. It's possible the reason why experimental and secret aircraft (mistaken for alien UFOs ) are suddenly visible with certain cameras is due to the effects of polarimetry.

Follow up Got the math wrong. 2.3 mil is 2,300,000 nm or 4000 wavelengths

Nice video, weird and fantastic this is still new information 30 years after 👍👍. In 1992 my physics project (6th year) involved the design and invention of a hand held optical polarimeter. Had to build it too. Captured my fascination deeply. The rotational dependence of your 3rd filter on color pertains to the relationship its thickness has on light wavelength. A. If the thickness is just right such that multiple odd quarter wavelengths of light (λ/4, 3λ/4, 5λ/4, etc) fit between its faces, then that light will pass through. Multiple half wavelengths will cancel. B. Remember that a quarter wave (λ/4) is also 90° which determines how circular polarization manifests. Rotating a third polarizer in between two others (a linear polarizer and an analyzer) will also change the transmitted color. The trick is to first begin with linearly polarized light. Instead of using cellophane tape an excellent multiple quarter-wavelength polarizer (near yellow light) can be found using scotch tape. Thicknesses is around 2.3 mil or 2300 nm which is happily about four wavelengths at yellow. You will also notice that the diatomic molecules in the upper atmosphere are linearly polarized (in blue) when looking toward the north sky. Works very well when the sun is near meridian (south in the northern hemisphere, so about noon) such that the light experiences a 90° reflection upon traveling to your eyes. So the sun is at your back while you're looking toward the north and the upward angle of view is dependent on your latitude. Not sure where the angle of maximum linear polarization occurs but it likely has something to do with Brewsters angle. 🙂🙂

Its magic.

Good thing he told to not turn the microwave on with the cell phone inside! Phew!

Cool game! 20 out of 25 in 563.2 seconds. Score of 18

This is actually the best video explaining polarizers on youtube.

For avoid reflect from water when shoting on camera circle polarized need or linear

I like you humor :D Sub

u could tell a bit about 3d glasses also.

man that was amazing

Question if radioactive decay is arouind 10,000 years. Then why isn’t Nagasaki and Hiroshima still in quarantine, actually the Japanese started rebuilding almost immediately as if no radiation ever existed. In 1945 only 77 years ago the USA dropped the bombs today 409,305 live in Nagasaki and 1,201,281 live in Hiroshima. Remember our media and pseudo science tells us a lot of thing that aren’t true. now days true science has been muzzled by dogma and the corporate macadamia controllers. Anyway I love you’re shows so I subscribed.

this is very, very good. thank you for sharing your intellectual journey to aid mine! (and ours)

I am not an "expert" but here is my guess: The linear polarizer is simply refracting light from the full spectra along a single axis. Ambient light is is all colors/wavelengths. As you rotate the polarizer is is polarizing different wavelengths based on their phase angle.

different frequency light gets bent by different amounts , turning the filter changes the incident angle and thus changes which light is reflected or refracted . probably more to it .

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This explanation is all over the place. It would of been better if he had explained a few things properly, rather than 20 half-assed explanations.